Ahmed Matiur Rahman A fever is a rise in internal body temperature to levels that are considered to be above normal. Average body temperature is about 98.6°F or 37°C, and temperatures above 100.4° F or 38°C are generally considered to be febrile. Body temperature is determined by the body’s [...]
Archive for the ‘Do You Know’ Category
December 5th, 2009 - 5:38 am § in Do You Know
Who built the first castle?
Ahmed Matiur Rahman The idea of a castle is connected with defense. In fact, the word ‘castle’ comes from a Latin word weaning fort. So a castle was a home of a ruler or lord that could be defended. Even in ancient Egypt, the royal palaces were fortified with towers and parapets, and so were lik[...]
November 1st, 2009 - 12:01 am § in Do You Know
How many odors can we smell?
Ahmed Matiur Rahman Compared to many animals, man’s ability to smell is not very good at all. In fact, it is probable that as men developed, his sense of smell became less and less keen, until today he is chiefly a “visual animal”. [...]
October 1st, 2009 - 6:18 am § in Do You Know
Where did olives come from?
The original home of the olive is southwest Asia. For many centuries olives have provided food for people and have been carried by caravan to distant markets. An unusual thing about the olive is that it cannot be eaten fresh from the tree. The bitter taste of the fruit must be removed by pickling, [...]
September 7th, 2009 - 9:43 am § in Do You Know
How Aluminium Foil is made?
Aluminium is the most abundant metal in the earth’s crust. Actually, it makes up between 7 and 8 percent of the crust. But aluminium is never found in a pure state in nature. Rather, it is combined with other chemical elements in compounds that are very hard to break down. The most important ore o[...]